Iss

I caught word that ISS was passing in a moment, so I tuned UV-PRO to 145.825MHz, the APRS digipeater on ISS. I heard packets from Pittsburgh, PA; Smyrna, DE, and Atlanta, GA. I tried to ping out my location a couple times, but it looked unheard according to https://ariss.net/.

I overheard some tips from Tom, KA3TKW, on the 21 repeater: Check out the AMSAT manuals for contacting satellite repeaters, and operate full duplex, so you can hear while transmitting.

The ISS passed at 8:55am EDT at 49 degrees. My vertical 1/4-wave ground plane antenna in the tree picked it up really well. I copied a handful of callsigns pretty easily:

• KO4PDI - FL
• KC4Y - AL
• K4MMD - FL
• N5ACR - MD
• KC4YMT - GA
• KC3MM - SC
• K3DMM - PA, Harrisburg

I confirmed hearing K3DMM on the Morning Grind round table (K3IR) a few minutes later that morning.

I tuned to the ISS Repeater on 437.8Mhz as it went overhead (according to gpredict). I couldn’t hear anything really, but I saw a signal sweeping in and out (doppler shift) as it would have been crossing over head.